Features:

1.Built-in Batteries: 2200mAh/3.7V

2. Built-in multi-protection

3. For over-charge， over-discharge， over-current， short-circuit and temperature

4. Input: 5V 0.5A，

  Output: DC 5.2V 0.5A，

   Output power: 5W

5. Cycling Life: over 500 times

6. Up to 51hrs extra music， up to 12hrs extra talk， up to 12hrs extra play， and up to 57hrs extra talk

7. Weight: 73g

8. Color: Pink， Black， Purple， Green， White， Orange， Yellow， Blue